US Bridges

TR 31 over Unnamed Ditch

Good

Ford County, Illinois · 0.34 Mi. E Liv CO · Structure no. 027342500000000

Built
2002
23 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
200
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 31 over Unnamed Ditch is a prestressed concrete box beam or girders - multiple carrying TR 31 over Unnamed Ditch in Ford County, Illinois. It was built in 2002, so it is 23 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 16% of them trucks, projected to reach 227 by 2046. The structure is 49 ft (15 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTR 31
CrossesUnnamed Ditch
Location0.34 Mi. E Liv CO
RouteCounty Highway 0
Coordinates40.76216, -88.23322
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length49 ft (15 m)
Longest span47 ft (14.3 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic227 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 31 over Unnamed Ditch built?

It was built in 2002, making it 23 years old in 2025.

What condition is TR 31 over Unnamed Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does TR 31 over Unnamed Ditch carry?

About 200 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is TR 31 over Unnamed Ditch?

The structure is 49 ft (15 m) long with a longest span of 47 ft (14.3 m) and a deck 27 ft wide.

Who owns TR 31 over Unnamed Ditch?

It is owned by the Town or Township Highway Agency.